Reflective fresnel lens for sub-millimeter wave power distribution
AssigneeNorthrop Grumman Corporation
InventorKent Peterson
Life of this patent
Estimating the term…
Abstract
A reflective Fresnel lens for shaping an incident wave for efficiently delivering the incident wave to an array of receivers, having a wavelength within a predetermined range. The Fresnel lens comprises a ground plate and a plurality of reflective elements formed at various levels of the ground plate. The predetermined range includes millimeter wavelength range, sub-millimeter wavelength range or microwave wavelength range.
Claims31
A reflective Fresnel lens for shaping an incident wave having a wavelength within a predetermined range, the Fresnel lens comprising:
- a ground plate;
- and
- a plurality of reflective elements formed at various levels of the ground plate.
A reflective Fresnel lens, comprising:
- a ground plate;
- and
- an array of diffractive patterns formed on the ground plate, wherein each of the diffractive patterns comprises a plurality of reflective elements formed at various levels of the ground plate.
A millimeter-wave power amplifier, comprising:
- an input source, operative to generate a local oscillation energy at a predetermined wavelength;
- an array of amplifiers, operative to amplify the local oscillation energy;
- at least one reflective Fresnel diffractive lens, wherein the reflective Fresnel diffractive lens comprises a multilevel reflective elements to shape the amplified local oscillation energy;
- and
- an array of horn antennas disposed at a focus of the diffractive Fresnel lens.
Dependencies are inferred from the claim text.